2x2+7=25

Simple and best practice solution for 2x2+7=25 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2x2+7=25 equation:



2x^2+7=25
We move all terms to the left:
2x^2+7-(25)=0
We add all the numbers together, and all the variables
2x^2-18=0
a = 2; b = 0; c = -18;
Δ = b2-4ac
Δ = 02-4·2·(-18)
Δ = 144
The delta value is higher than zero, so the equation has two solutions
We use following formulas to calculate our solutions:
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}$
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}$

$\sqrt{\Delta}=\sqrt{144}=12$
$x_{1}=\frac{-b-\sqrt{\Delta}}{2a}=\frac{-(0)-12}{2*2}=\frac{-12}{4} =-3 $
$x_{2}=\frac{-b+\sqrt{\Delta}}{2a}=\frac{-(0)+12}{2*2}=\frac{12}{4} =3 $

See similar equations:

| -2/3n+6=-10 | | 24+h/4=-7 | | c3=1/1001 | | 8.71/x=1/1.83 | | 7v+21=-3(v+3) | | 3a-10=5(a+1)+16a+4 | | 32-2x=15 | | 6-6x=-8x+5 | | 4w+3w-6w=w+15=12w-3w | | -12=4(w-6)-7w | | -3x-5x2x-5=6x-3x | | 3/20=2/5x | | X/4+1/7=x/7-1/7 | | 1/7(63n-77)=-11+9n | | (x/2)+11=2x-13 | | 4n-5=-2 | | 2(x+4)^2-10=24 | | 5x-15=7×-13 | | a+1.25=2a−1 | | 3m+12=12m | | 5/2p-30=30-5/2p | | 11(x+4)-4(x-2)=3(x-2)+3(x-2) | | (6x+2)=(3x+7) | | -4(x+6)=7x-2 | | 13s−31=2s−9 | | 2(4x-3)=63 | | 3x-87=x+25 | | 2v-36=6(v-8) | | 45=p+7.6 | | -4n+3=3 | | 2(w+4)=-3w-27 | | 0.25r−0.25+0.25r=0.5−0.25r |

Equations solver categories